how can i change color of certain characters in string textbox access?

Question

I have this table named TblCondition and a form that contains a textbox i need a way to colorize some characters in textbox which exists in the TblConditions .

Example : Let’s say the form textbox contains this phrase "Hi my name is Amr" and my table contains these letters "H,M,R" in three separated records Then these three characters in textbox will be colorized Red and the rest will stay black

I need a flexible way and easy to edit .

Thanks